<md-tabs md-border-bottom flex>
    <md-tab label="评卷">
        <md-content class="md-padding">
            <md-card>
                <div zoomer>
                    <img class="md-card-image" alt="Washed Out" ng-cloak ng-src="images/1.jpg">
                </div>
                <img class="md-card-image" alt="Washed Out" ng-cloak ng-src="images/1.jpg">
                <img class="md-card-image" alt="Washed Out" ng-cloak ng-src="images/1.jpg">
                <img class="md-card-image" alt="Washed Out" ng-cloak ng-src="images/1.jpg">
            </md-card>
        </md-content>
    </md-tab>
    <md-tab label="考生原卷">
        <div layout="row" layout-margin layout-wrap>
            <div zoomer>
                <img src="images/2.jpg" style="width:100%" />
            </div>
            
        </div>
    </md-tab>
    <md-tab label="试卷">
    	<md-tab-body>
          <div  layout-gt-md="row" layout-md="column" layout-fill style="height: 100%">
            <div flex style="background-color: blue;overflow:auto;width:100%">
              <div zoomer>
                <img src="images/3.jpg" style="width:100%" />
            </div>
            </div>
            <div layout="row" layout-align="center center" class="text-center b-t b-b b-r">
            <md-button class="md-icon-button" aria-label="More" ng-click="answer = true">
        <ng-md-icon icon="keyboard_arrow_down" style="fill:pink" size="32"></ng-md-icon> 
      </md-button>

      <md-button class="md-icon-button" aria-label="More" ng-click="answer = false">
        <ng-md-icon icon="keyboard_arrow_up" style="fill:pink" size="32"></ng-md-icon> 
      </md-button>
            </div>
             <div flex ng-hide="answer" style="background-color: blue;overflow:auto;width:100%">
              <div zoomer>
                <img src="images/3.jpg" style="width:100%" />
            </div>
            </div>
          </div>
        </md-tab-body>
    </md-tab>
    <md-tab label="标答">
        <md-content class="md-padding">
            222
        </md-content>
    </md-tab>
</md-tabs>
<div style="width:300px;">
    right
</div>
